Options for big cuts in emissions by 2050

Solutions to climate change - that's the promise of the Working Group 3 report of the Intergovernmental Panel on Climate Change, which outlines options for cutting emissions in the energy supply sector, industry, transport, buildings, land use and agriculture.

The report makes it clear that if the world wants to avoid dangerous climate change of two degrees, global emissions will need to be cut by between 40 to 70% by mid-century ... and to near-zero by the end of the century.